Thermoplastic composite muffler
AssigneeE. I. Du Pont de Nemours and Company
InventorFabrice S. J-M Giaume
Life of this patent
Estimating the term…
Abstract
A muffler for internal combustion engines including a hollow body having an inlet opening and an outlet opening, an inlet pipe extending into the hollow body through the inlet opening an outlet pipe extending out of the hollow body through the outlet opening, wherein the hollow body is formed by a material comprising a fiber lining and a composite structure, and wherein the fiber lining partially penetrates the composite structure.
Claims19
A muffler for internal combustion engines comprising:
- (a) a hollow body having an inlet opening and an outlet opening,
- (b) an inlet pipe extending into the hollow body through the inlet opening
- (c) an outlet pipe extending out of the hollow body through the outlet opening,
- wherein the hollow body is formed by a material comprising a fiber lining and a composite structure, and wherein from 0.5 to 50 percent of the fiber lining penetrates the composite structure, based on the thickness of the fiber lining, and
- wherein the composite structure comprises
- (iv) a surface having at least a portion thereof made of a surface resin composition;
- and
- (v) a core comprising a fibrous material impregnated with a matrix resin composition,
- wherein the surface resin composition and the matrix resin composition are polyamide compositions comprising one or more polyamide resins.
A muffler for internal combustion engines comprising:
- (a) a hollow body having an inlet opening and an outlet opening,
- (b) an inlet pipe extending into the hollow body through the inlet opening
- (c) an outlet pipe extending out of the hollow body through the outlet opening,
- wherein the hollow body is formed by a material comprising a fiber lining and a composite structure, and wherein from 0.5 to 50 percent of the fiber lining penetrates the composite structure, based on the thickness of the fiber lining, wherein the fiber lining is fixed to the composite structure using a heat-resistant yarn.
A process for producing a muffler or silencer, comprising the steps of:
- (a) forming a hollow body having an inlet opening and an outlet opening, the hollow body comprising a fiber lining and a composite structure, wherein from 0.5 to 50 percent of the fiber lining penetrates the composite structure based on the overall thickness of the fiber lining, and wherein the composite structure comprises
- (i) a surface having at least a portion thereof made of a surface resin composition;
- and
- (ii) a core comprising a fibrous material impregnated with a matrix resin composition,
- wherein the surface resin composition and the matrix resin composition are polyamide compositions comprising one or more polyamide resins,
- (b) connecting an inlet pipe extending into the hollow body through the inlet opening to the hollow body, and
- (c) connecting an outlet pipe extending out of the hollow body through the outlet opening to the hollow body.
Dependencies are inferred from the claim text.